def rec(port):
zmq_ctx = zmq.Context()
s = zmq_ctx.socket(zmq.SUB)
s.bind('tcp://*:{port}'.format(port=port))
s.setsockopt(zmq.SUBSCRIBE, b"")
stream = ZMQStream(s)
stream.on_recv_stream(rec_frame)
ioloop.IOLoop.instance().start()
while True:
pass
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